Bloomberg offered a bit more specificity on things in a report on Wednesday, saying that the first ARM-based Macs could come in 2020, with plans to offer developers a way to write a single app that can run across iPhones, iPads and Macs by 2021.

The first hints of the effort came last year when Apple offered a sneak peek at its plan to make it easier for developers to bring iPad apps to the Mac.

Why it matters: The move could give developers a way to reach a bigger market with a single app, although the transition could be bumpy. For Intel, of course, it would mean the loss of a significant customer, albeit probably not a huge hit to its bottom line.

Our thought bubble:

If anything, the Bloomberg timeline suggests that Intel might actually have more Mac business in 2020 than some had been expecting.

The key question is not the timeline but just how smoothly Apple is able to make the shift. For developers, it will likely mean an awkward period of time supporting new and classic Macs as well as new and old-style Mac apps.

History lesson: Apple has already made several big shifts in the 25-year history of the Mac, moving from Motorola chips to PowerPC processors and then to Intel. It's also moved from the classic Macintosh operating system to the Unix-based Mac OS X.

As iPhone sales have tapered off, Apple has been putting increasing focus on growing its services business.

Why it matters: What started out as cloud storage and extended support contracts, Apples' "services" revenue sector has expanded to include Apple Music and will soon likely expand further to news, video and gaming.

The details: Apple has made an aggressive push into media and entertainment over the past year, which has sparked rumors that it could one day sell a bundled subscription, where consumers could potentially pay one fee for an array of entertainment and media services.

Video: The company is also looking to debut a new video streaming product in April, CNBC reports. The service will include free original content for Apple device owners and a the ability subscribe to other video services.

Gaming: Apple is planning a subscription service for games, Cheddar reported last month. The service would act like a Netflix for gaming, giving users access to many different games under one subscription payment.

Music: In a push to gain more subscribers, Apple Music sent notices to subscribers last week that they can now give a month's worth of free access to a friend with their referral. The week before it offered lapsed users three months of free access for resubscribing.

The big picture: Apple has pledged that, by 2020, its services business will be double what it was in 2017. However, hardware in general — and the iPhone in particular— still dominate companywide revenue.

What's next: The Wall Street journal reports that the tech giant is "shaking up leadership and reordering priorities across its services, artificial intelligence, hardware and retail divisions as it works to reduce the company’s reliance on iPhone sales."